Steam-generator.



No, 883,095. PATENTED MAR, 24; 1908.

H. DEL MAR. STEAM GENERATOR.

APPLIOATIOK FILED APB. 15,1907.

2 SHEETS-SHEET 1.

d H -h H a V 2 1 MN H g. T T L' T E .Q I I E n i i i Q Q Q 3 \R Q 3 $1 \R \Q Q Q Q Q v Q a 7 m JNVENTOR.

A TTORNEY.

nuno-ms Psnn's cm, WAnnNcroN, n. c.

PATENTBD MAR. 24, 1908.

-H."DE-L MAR. STEAM GENERATOR. AiPLIOATLON FILED APR. 15 1901 2 SHEETS-SHEET 2.

bums ATTORNEY UNITED STATES PATENT OEEIoE.

HARRY DEL MAR, or NEW YORK, N. Y., ASSIGNOR TO BOILERS AND ENGINEERING COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION or NEW JERSEY.

STEAM-GENERATOR.

Specification of Letters Patent.

Patented March 24, 1908.

To, all whom it may concern:

Be it known that I, HARRY DEL MAR, of the city, county, and State of New York, have invented a new and useful Improve ment in Steam-Generators, of which the following is a full, clear, and exact description.

My invention relates to improvements in steam generators, and especially to generators of the horizontal type in which the old fashioned water-holding shell is combined with a system of fire tubes and hues, and in some cases, water tubes, in a way to utilize the heat generated beneath the boiler to the best advantage.

My invention -is intended to produce a f practical, compact and economical boiler,

which can be easily installed and which. will make steam cheaply.

, My invention is also intended to produce a boiler of this type which can be easily adapted to meet varying conditions of installation.

With these ends in view, my invention consists of a steam generator, the construc tion and arrangement of which will be hereinafter described and the novel features claimed.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate corresponding parts in all the views.

Figure 1 is a cross section on the line 1.1 of Fig. 3, of a generator showing my improvements. Fig. 2 is a cross section showing a slightly different arrangement of the fire box. of the boiler. Fig. 4 is a longitudinal section With parts broken away, of a slightly modified form of the invention, in which the boiler proper is arranged with the shell in two units instead of one. the line 5.5 of Fig. 4, and Fig. 6 is a cross section on the line 6.6 of Fig. 4.

The boiler as shown in Figs. 1 to 3, comprises a single main shell 10 like the oldfashioned water containing shell, and this is mounted on masonry 11, in any suitable way, and can have the fire box directly be neath it for end firing, as in Fig. 1, or at one side for side firing, as in Fig. 2. Leading upward diagonally through the shell from the under side, are a series of cross tubes 13, which should be of rather large diameter, these delivering into horizontal flues or combustion chambers 14 at the sides of the boiler. From these flues extend other series Fig. 3 is a broken longitudinal section Fig. 5 is a cross section on The combustion chambers 14 are closed at the ends, and so the products of combustion mingle, and combustion is promoted in the chambers 14, after which the said products pass through the flues or tubes 17 to the lines 18, and thesedeliver into the main flue 19 at the end of the boiler, while this connects with the stack 20. In the fines or combustion chambers 14 dampers 15 can be conveniently arranged to close the upper ends of the tubes 13, and the dampers can be controlled by rods 16, or equivalent controlling devices, so that by regulating the dampers the draft can be very nicely controlled. It will be seen that this makes a very compact and economical generator, as the water is heated directly from contact of the fire and products with the shell 10, while the hot gases also pass through the tubes 13, are regenerated to a certain extent in the chambers 14, are again brought into position to have the heat absorbed in the tubes 17, and as the flues 18 are in contact with the ,shell 10, it will be seen that the water will be constantly absorbing heat, so that by the time the products of combustion reach the main flue 19 they will be comparatively cool, and pretty thoroughly consumed.

In Figs. 4 to 6 l have shown a slight modi fication of the invention, and here the boiler shell is made of two units 10, instead of one, the units being connected at the lower part by water tubes 21. The cross tubes 13 and 17 and the fines 14 and18 are arranged substantially as already described, except that the lines 18 are closed at their inner ends, and open into the casings 22 at the boiler ends. The casings 22 form combustion chambers at these points, and the products of combustion are led back through the boiler shell, through the fire tubes 23, which deliver into the main flue 24, this being centrally arranged in this instance, and deliver ing into the stack 25, as shown best in Fig. 5. In this type of boiler, and in fact with the structure shown in Figs. 1 and 2, a separate steam drum 26 can be used if desired, and this can connect with the main shell or shells by the legs 27, as usual in such cases. I claim here no invention for this arrangement of the steam drum, but illustrate it to show the adaptability of the boiler, and it will be seen that if desired, the steam can be collected in this drum, and Will be to a certain extent super-heated. In either type of the boiler, that is, the form shown in Figs. 1 and 2 or in Figs. 4 to 6, the essential thing is the arrangement of the flues, cross tubes and combustion chambers, and it Will be observed that the principle is exactly the same in both types. The type shown in Figs. 4 to 6 is adapted for larger power, and it enables a boiler of large capacity to be conveniently put together in a more or less restricted place, Where a boiler of the same size in a single unit could not very Well be installed.

Having thus fully described my invention, 1 claim as new and desire to secure by Let ters Patent -1. A steam generator comprising a Water holding shell, combustion chambers closed at the ends and arranged at the sides of the shell, cross fire tubes leading through the shell from the under side and discharging mid the combustion chambers, outlet flues" arallel With the combustion chambers, and lire tubes leading through the shell from the combustion chambers and discharging into the outlet flues.

2. A steam generator comprising a Water holding shell, combustion chambers at the sides of the shell, said combustion chambers being closed at the ends, outlet flues parallel with the combustion chambers, cross tubes leading through the shell from the under side and discharging into the combustion chambers, cross tubes leading through the shell from the combustion chambers into the outlet flues, longitudinally arranged fire tubes leading through the shell and means for directing the products of combustion from the outlet fiues to the longitudinal fire tubes.

HARRY DEL MAR. lVitnesses:

WARREN B. I-IUTornNsoN, FRANK L. STUBBs. 

